fix: install mysql-connector-python via pip instead of apt

python3-mysql.connector not available in debian bookworm

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Dockerfile

@@ -13,13 +13,13 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     python3-numpy \
     python3-opencv \
     python3-pil \
-    python3-mysql.connector \
     wget \
     ca-certificates \
     && rm -rf /var/lib/apt/lists/*
 
-# Install additional Python packages
+# Install additional Python packages via pip
 RUN pip3 install --no-cache-dir --break-system-packages \
+    mysql-connector-python \
     requests \
     python-dotenv